baber/WOPTO huggingface dataset:
Patent GB-1439304-A (GB)
Title: Grading device
IPC: A01K61/00
Filed: 1974-05-10
Abstract: 1439304 Sorting grid, filtering grid R B BROWN 10 May 1974 [25 June 1973] 20818/74 Headings B1D and B2H A grid comprises a frame 10 having a first longitudinally extending member 18, side members 16, e.g. rods fixed to the member 18, and a second longitudinally extending member 12 supported by the side members; a plurality of equally spaced parallel cylindrical members 101-154 of equal diameter fixed at one end to the bottom memiber and defining passages of equal width between one another; the member 12 having openings therein to receive the other end of each of the spaced members; fastening means, e.g. spring clips 106, to removably secure the member 12 to some of the spaced members; and cylindrical sleeves 20, e.g. of metal or plastics, adapted to be slipped over every alternate or each of the spaced members to reduce the width of each of the passages by the same amount. One or more further sleeves, e.g. 22, may be slipped over each sleeve 20 to further reduce the width of each passage. The grid may be used for screening different sizes of rock, grading coal, sand, gravel or wood chips, or for sorting fruit, vegetables, grain or live fish in ponds or raceways. In the latter case, the smaller fish swim through a first grid to another raceway and then a sleeve is added to each of the rods to reduce the width of the spaces to hold them so that they will not swim back through the grid. The operator can then grade the spaces between the rods in another grid placed downstream of the first grid to effect further sorting of the smaller fish. The grid may also be used to screen fish or debris out of flowing water. Grid units may be secured together to form a live fish growing crate for confining fish in a body of water.
Patent GB-875932-A (GB)
Title: Electron tube having planar electrodes
IPC: H01J21/36
Filed: 1958-06-30
Abstract: 875,932. Thermionic valves. EITEL-McCULLOUGH Inc. June 30, 1958 [Oct. 25, 1957], No. 20869/58. Class 39(1). In an electron tube comprising an envelope having alternate ceramic, e.g. alumina and metal rings joined together, and containing planar electrodes including a cathode 22, a control grid 23, a screen grid 24, a suppressor electrode 25 and an anode 26, the screen grid wires are aligned behind control grid wires and the suppressor electrode is of ring-like shape providing an unobstructed aperture larger than the area of the cathode. As shown, the cathode disc 22 is supported on four legs 40 and the cathode heater 32 is sandwiched between disc 22 and a further apertured disc 41 integral with legs 40, three metal heat shields 43 also being provided. Rings 12-14 of "Kovar" (Registered Trade Mark) are shaped to accommodate differential thermal expansion of these rings and the electrodes 22-24 or their supports. During manufacture, the electrodes are secured to their respective metal envelope rings, each of which carries a terminal tab 62, 63, and the tube is assembled in two parts, ring 13 and terminal 19<SP>1</SP> being secured to rings 19, before a final seal is made between rings 18, 19.
Patent GB-810597-A (GB)
Title: Gyromagnetic resonance method and apparatus
Inventor: PACKARD MARTIN EVERETT
IPC: G01R33/44
Filed: 1955-06-15
Abstract: 810,597. Electric tests. VARIAN ASSOCIATES. June 15, 1955, No. 20915/57. Divided out of 810,596. Drawings to Specification. Class 37. The proportions of two substances in a mixture are determined by producing gyromagnetic nuclear resonance of the substance changing the state for example, temperature or pressure of one or more of the substances, producing resonance again and comparing the two resonances. The apparatus is described with reference to determining the relative amounts of oil and water in a sandstone core. Resonance of the protons in the core was produced with the core at room temperature, the total E.M.F. produced in a resonance detector circuit by the passing nuclei or protons in the water and oil being determined. The water froze and that part of the E.M.F. produced by the water almost disappeared while that produced by the oil increases because of the Boltzmann factor. By correcting for this factor the E.M.F. due to the oil protons may be determined. Changes in pressure are also possible, and in the case of an oil and water core in close relationship to a mass of other material also containing hydrogen nuclei or protons a first measurement may be made and the core then cooled relative to the foreign mass. The change is indicative of the core content. The apparatus used for detecting the gyromagnetic resonance may be as described in parent Specification 810,596.
Patent GB-708250-A (GB)
Title: Improvements in or relating to safety arrangements for coke ovens
Inventor: PEARSON FRANK
IPC: C10B41/04
Filed: 1950-08-24
Abstract: 708,250. Discharging coke-ovens. FORD MOTOR CO., Ltd. June 27, 1951 [Aug. 24, 1950], No. 20975/50. Drawings to Specification. Class 51 (2). [Also in Group XXXVII] In an arrangement for discharging coke ovens, when the door at the discharge end of a particular oven has been removed by means of a doorremoving vehicle equipped with a coke guide and when a coke vehicle is positioned to receive the charge, an electrical connection is extended from the coke vehicle to operate a ram, mounted on a vehicle at the other end of the oven, only when the ram vehicle and door-removing vehicle are correctly aligned at the oven to be discharged. Operation of the ram is controlled by electrical contacts associated with each oven and with the ram vehicle and door-removing vehicle.
Patent GB-1192621-A (GB)
Title: Process for Nickelling Plastics Materials
IPC: C23C18/20
Filed: 1967-05-05
Abstract: 1,192,621. Etching. FARBWERKE HOECHST A.G. 5 May, 1967 [5 May, 1966], No. 21017/67. Heading B6J. [Also in Divisions B1, C7 and H1] Fluorine-free, chlorine-free, bromine-free plastics are etched with an aqueous chlorine or bromine solution, with a liquid chlorohydrocarbon such as chlorobenzene, carbon tetrachloride, chloroform or tetrachloroethylene, or with a current of chlorine or bromine containing water vapour. Plastics containing fluorine are first treated with an alkali metal solution of, for example, sodium or potassium in liquid ammonia or phosphoric acid tridimethylamide, then are etched with an aqueous chlorine or bromine solution or wtih a current of bromine or chlorine and water vapour. The materials etched may be in the form of powders, granules or sheets and may include polyethylene, polypropylene, polyvinyl chloride, polytetrafluor. ethylene, polytrioxan, polyethylene terephthalate and phenol-formaldehyde resins.
Patent GB-934161-A (GB)
Title: Improvements in fitted sieve frames
Inventor: BINGHAM JOHN DUDLEY
IPC: B07B1/48
Filed: 1961-06-12
Abstract: 934,161. Sieve frames. HENRY SIMON Ltd. May 15, 1962 [June 12, 1961], No. 21093/61. Class 117. A sieve frame on which a screen 14, e.g. of woven fabric, is disposed comprises end and side channel members with the parallel webs of each member extending outwardly, at least one side and one end member having a yoke element 16 to which the screen is attached arranged in its associated channel and adjustable therein, the end members having their webs furthest from the screen arranged to interlock with those of adjacent sieve frames. The frame is a rectangular metal framework, the screen being held at one end member in a groove 13 by a bar 15 with screws (not shown). The screen is held in the opposite end member in the yoke 16 which is adjustable by manual rotation of screws 17 to regulate the tension of the screen. The side members (not shown) retain the screen in yokes as 16. Hooked flanges 9, 10 project from the end members of the frame and engage with complementary flanges on adjacent frames to prevent material passing between the frames, and to allow the frames to be withdrawn from one end of the guides in which they are supported.
Patent GB-698295-A (GB)
Title: Gyroscope having erecting means to compensate for acceleration errors
IPC: G01C19/30
Filed: 1951-09-06
Abstract: 698,295. Gyroscopic apparatus. BENDIX AVIATION CORPORATION. Sept. 6, 1951 [Sept. 30, 1950], No. 21097/51. Class 97 (iii). In a free gyroscope having erecting means tending to maintain the spin axis of the gyro in a predetermined orientation a compensating torque to oppose the erroneous torque of the erecting means about an axis due to acceleration forces is provided by a movable mass which is moved in response to an acceleration force to develop the compensating torque. Alternatively the compensating torque may be developed by at least one pair of movable masses one or the other of which is moved in response to an acceleration force depending on the sense in which the said force is exerted. As shown, in a vertical gyroscope provided with erecting means 11, 13, 16, 17, 18, of the rolling ball type described in Specification 649,276, masses 23, 25 are pivotally mounted on the gyro casing 5 by resilient members 27, 29 to be rockable along the bank axis X towards or away from the spin axis X and are operated by solenoids 19, 21 under the control of an angularrate gyro 39 which in response to turning of the craft carrying the apparatus closes one or other of the contact pairs 43-49 or 47-49 to complete an energizing circuit for the appropriate solenoid, which on energization rocks the associated mass towards the spin axis. Movement of the masses is limited by portions 35, 37 of brackets 20, 22 which support the solenoids. The angular rate gyro may be provided with a dashpot 52 or other damping device to prevent operation of the contacts when the craft is subjected to turbulence. Another pair of solenoids 51, 53 and associated masses 55, 57 in line with the pitch axis Y is provided, one or the other of which is operated by an accelerometer 59 to provide a compensating erecting torque about the bank axis Z in response to linear accelerations.
Patent GB-1254387-A (GB)
Title: Warehousing apparatus
IPC: B65G1/04
Filed: 1970-05-01
Abstract: 1,254,387. Warehousing apparatus. EATON YALE & TOWNE Inc. 1 May, 1970 [5 May, 1969], No. 21113/70. Heading B8E. A stacker truck 2, Fig. 1, has a carriage 6 which runs on rails 8 and is driven by a friction wheel 128, Fig. 3, journalled on a pivoted arm 124 which supports the drive motor 114 for the wheel 128. The stacker is electrically driven, power being supplied by a wire carried in a floor channel, and is controlled by a cable 40, Fig. 2A (not shown), with a three-brush pick-up. Electric motors on the stacker drive hydraulic pumps, the outputs of which are controlled to effect movements of the platform and of the driving wheels. Motor/pump combination 60 raises and lowers the platform 20, whilst the motor/pump combination 100 drives the wheels 128. A shuttle 22, Fig. 8, is driven into the racks by a motor 154. The movement of the shuttle is effected by fixed and movable racks 170, 172 and pinions 168. A load 151 is withdrawn or pushed into the racks by lugs 24 which are automatically projected or withdrawn each time the shuttle is fully extended. The stacker may be controlled by an operator riding on a platform 54, Fig. 2, instead of by a central computer.
Patent GB-1271409-A (GB)
Title: Improvements in or relating to targets for cathode ray tubes for optically storing information
Inventor: UNO YOSHIHIRO
IPC: G11C13/04
Filed: 1969-04-24
Abstract: 1,271,409. Cathode-ray storage display tubes. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 24 April, 1969 [24 April, 1968; 25 April, 1968 (2); 4 Dec., 1968], No. 21129/69. Heading H1D. [Also in Division C4] A target for a C.R.T. comprises a transparent back-plate 11 and a storage surface 12 formed of an evaporated alkali-halide film and one or more conductors for discharging the alkali-halide and for heating it to erase stored information, wherein the, or one of the conductors, and the alkali halide are adjacent one surface of the backplate such that the film is divided in a regular or irregular fashion into a plurality of distinct sections to inhibit its peeling off. The alkali halide may be NaCl, KCl or KBr with F-band absorption due to F-centres at 4580, 5560 and 6250  respectively. In the storage device, Fig. 1 (not shown), the glass or mica plate 11 carries an electrically resistant material connected to electrodes (15, 151) for heating beneath KCl storage layer (12) which is translucent and may be in a light reflecting or transmitting device. Light may be transmitted through the screen from source (16) through filter (17), and reflected by mirror (13). Glass back-plate 11 may be 50 to 500 Á thick to satisfy thermal capacity requirements, peeling of the storage surface from the back-plate due to differences in thermal expansion being inhibited by the minute sectioning, and a conductive film, parallel lines or wire grill preventing charging, while the evaporated storage layer may be of one micron crystals and 10 or 12À5 microns thick. In Figs. 2a, 2b (not shown), conductive paint, evaporated or plated electrodes (21, 21<SP>1</SP>) are connected by parallel wires (22) or grill (22<SP>1</SP>) e.g. of 10 Á or less thickness and 20 Á pitch. In fabrication, Cr and photo-resist are deposited in turn, covered with a mask and U.V. exposed. Further Ni deposition may be by plating or evaporation, KCl being evaporated in vacuum or Ar. Conductive film (23) may be included between the wires and back-plate. In Figs. 4a, 4b (not shown), the back-plate may include channels (24) with lands (24<SP>1</SP>) and stannic oxide films (25, 25<SP>1</SP>) need not be transparent in the channels. Further heating element (2511) may be included. The storage surface may alternatively be formed by the application of separate conductive films, or separate alkali halide films, e.g. by evaporation through a mask (29) (Fig. 5, not shown). To increase adhesion, the surface may be sandblasted (Fig. 6, not shown) and surface roughness of several to several tens of microns is specified. The storage device may be as in Fig. 7 (not shown) utilizing an annular fluorescent lamp (16a) for viewing and a sand-blasted, milky, magnesium oxide or alkali halide covered glass for the C.R.T. to facilitate viewing. The electron gun (14b) may be at an angle to the longitudinal axis (Fig. 8, not shown).
Patent GB-1498454-A (GB)
Title: Circuit breaker with trip-latch means
IPC: H01H71/50
Filed: 1975-05-19
Abstract: 1498454 Circuit breaker latch mechanism WESTINGHOUSE ELECTRIC CORP 19 May 1975 [30 May 1974] 21156/75 Heading H1N A circuit breaker having an operating mechanism 35 of known type in which a trigger arm 51 is biased towards its tripping position by a toggle linkage 41, 43 and springs 47, is provided with a latching mechanism 61 comprising a latch lever 65 carrying a roller 59 which engages the latch surface 57 of thr trigger arm 51 to latch it in the cocked position against the force of its bias. Latch lever 65, which comprises a pair of L-shaped arms 65a, 65b (Fig. 3) pivoted at 73 near one end, is held by a toggle linkage 83, 85 when the latter is substantially erect but slightly over-centre. A projection 95 on the link 85 retains the linkage in this position located against the pivot pin 87, which connects the arms of latch lever 65 to toggle link 83 at their other end. These toggle links each comprise a pair of arms, the arms 85 being pivoted at 89 to the supporting frame 63 and joined by a yoke 85a, and the lower ends of arms 83 being linked to arms 85 by a knee pin 91. A release lever 69 pivoted through a support plate 99 has an arm 125 which can be pushed against the yoke 85a to move the knee pin 91 over the dead-centre position, thus collapsing the toggle linkage and releasing the latch lever and trigger arm to trip the breaker. A torsion spring 86 may be provided to return the toggle linkage to the erect position, or this may be done manually by movement of the operating handle to engage the roller 59 and push it, and the toggle, back into its latching position. Re-setting of the trigger arm pushes its end face against the roller 59 which is spring-loaded in a slotted hole 77 so that it can yield and return to latch the trigger arm. Actuation of the trip is either manually by the push button 97, or automatically on overload by the electromagnetic actuator 71, which is of the type in which an electromagnetically-biased plunger armature 115 is released for spring operation by a pulse from a circuit board 119 fed from the phase secondaries of current transformers. In an alternative embodiment (Figs. 4 and 5, not shown) the toggle linkage is held with the knee pivot on the other side of dead centre and retained by projections on the end of each arm of the toggle link 85 engaging with lateral extensions on the release lever.
Patent GB-1011866-A (GB)
Title: Improved metering apparatus
Inventor: CRISPE STANLEY WILLIAM
IPC: A21C11/16
Filed: 1963-05-28
Abstract: 1,011,866. Apparatus for dispensing cracker dust. T. & T. VICARS Ltd. May 13, 1964 [May 28, 1963], No. 21194/63. Heading A2A. Apparatus for dispensing cracker dust, i.e. a mixture of fat and flour, at a constant rate, on to a sheet of dough 34 being conveyed, on a travelling web 36, to the laminating operation during the manufacture of cream crackers, comprises a hopper 10 holding cracker dust, and a pair of parallel, substantially horizontal rollers 12 and 14, which are rotated, as by gears 34 and 36, and form the bottom of the hopper, so that the gap 16 between them acts as a dispensing orifice. One of the rollers, e.g. roller 12, is preferably movable, to and fro, relative to the other, so that the width of the gap 16 can be varied. A scraper 26 removes adhering cracker dust from the roller 14 on to the roller 12, and another scraper 28 removes adhering cracker dust from the roller 12 on to a rapidly rotating rotor 30, which breaks up any caked or sheeted cracker dust and throws it against a plate 32 which deflects the cracker dust on to the sheet of dough 34.
Patent GB-1161209-A (GB)
Title: Apparatus for Washing Particles such as Capsules.
Inventor: MEHTA MAHARAJ KRISHEN
IPC: A61J3/07
Filed: 1966-05-12
Abstract: 1,161,209. Washing particles. M. K. MEHTA. 17 Jan., 1967 [12 May, 1966], No. 21199/66. Heading BlQ. . Particles such as capsules 13 are fed into the lower end section A of a rotating perforated cylinder 1, where they are immersed and washed in a bath 10 of naphtha; a helicoidal guide surface 3 within the cylinder carries the capsules, and up within an imperforate sleeve 15 around the cylinder, where they are washed in a section B by naphtha spray from a nozzle 16; finally, the capsules are carried up the cylinder to a section C, where they are again washed, this time by spray from a nozzle 17, the naphtha draining out through holes 2. Correctly-filled capsules are too large to pass through the holes 2, but incorrectly filled capsules fall through the holes and collect in a tray 22 in the naphtha bath 10. A refrigerator coil 11 cools the naphtha in the bath 10. The cylinder 1 is rotated by a motor 8 driving through a belt 9.
Patent GB-664120-A (GB)
Title: Improvements in or relating to the purification of argon
IPC: C01B23/00
Filed: 1949-08-15
Abstract: Argon is freed from nitrogen and oxygen by bringing it into contact with molten magnesium preferably maintained at a temperature such that the major portion of the reaction between nitrogen and oxygen and the magnesium takes place in the vapour phase.  Alternatively the impure argon may be passed over molten magnesium at such a temperature that the whole reaction occurs in the vapour phase.  The apparatus may comprise a plurality of reaction vessels containing molten magnesium into or over which the argon preferably freed from water vapour, is passed.  Means may be provided to reflux the magnesium carried away with the argon.
Patent GB-604769-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/38
Filed: 1945-08-20
Abstract: 604,769. Valves. STEIN & ATKINSON, Ltd., and CROSS, E. F. Aug. 20, 1945, No. 21277. [Class 135] A valve, e.g. for gas mains, comprises a body 1 having an inspection cover 21 and a closure piston 9 controlling an inlet port 7 and a rectangular outlet port 8 and operated by a threaded spindle 11 carrying a hand wheel 14. The valve may be power-operated and subject to -automatic control, and the spindle may be plain and actuated by lever mechanism. The piston may be of circular, square or rectangular section. The ports 8, 18 may be formed with edges 22, 23 respectively for scraping the piston. Alternatively, the piston may be fitted with a scraper ring. The underside of the piston is bevelled to suit the seat around the port 7. In modifications, the piston is provided with a spigot coacting with an asbestos ring let into the seating or with a leather or asbestos ring let into the end of the piston and coacting with an annular seat.
Patent GB-836814-A (GB)
Title: Process for the preparation of linear, high polymers of ª‡-olefins
IPC: C08F10/00
Filed: 1956-07-10
Abstract: In a modification of the method for the polymerization of olefins according to the parent Specification, the a sub-group metal compounds used are halides or oxyhalides and the temperatures of reaction are between -80 DEG  C. and +20 DEG  C. or between 150 DEG C. and 220 DEG  C.  Highly crystalline polypropylene of molecular weight from 5000 to 20,000 may be obtained. Polymerization may be in the absence of solvents.
Patent GB-677787-A (GB)
Title: Improvements in or relating to machines for breaking and mixing paper-making materials
Inventor: WARBURTON JUSTIN
IPC: D21B1/34
Filed: 1949-08-17
Abstract: 677,787. Breaking- and mixing-engines for paper pulp. MILLSPAUGH, Ltd. Aug. 16, 1950 [Aug. 17, 1949], No. 21382/49. Class 96. A breaking or mixing-enging for pulp, waste paper, cardboard, or broke comprises a tank 1 of generally spherical, oblate, or ovoid form with a propeller 7 projecting inwardly, below midheight, which circulates the material in water around the walls and back through the lower mid-region of the tank to the propeller. The front edges of the propeller blades may be serrated and at the rear is a plate with holes 20 through which finely-reduced fibre may pass to be further reduced by teeth 18 on the plate co-acting with stationary teeth 19, and may be drawn off at 22 or re-circulated at 24, the holes 20 being cleared by high pressure water jets or air blast at 25. A dump outlet 32 and a trash outlet 33 are provided.
Patent GB-401826-A (GB)
Title: Improvements in or relating to power transmission
IPC: F16D47/06
Filed: 1932-07-29
Abstract: 401,826. Power transmission. WILSON, A. G., 86, Petty France, Westminster. July, 29, 1932, No. 21409. [Class 69 (ii).] In power transmission mechanism comprising a hydraulic coupling and epicyclic variable-speed gearing, a clutch drum 2a or 4b, Figs. I and III, is connected to one member of the coupling, the other member carrying segments 5 moved radially outwards by centrifugal force against spring action, when a predetermined rate of rotation is attained. Specification 164,042, [Class 80 (ii), Gearing, Variable-speed &c.], is referred to. According to the Provisional Specification the radially movable members consist of rings or a helical coil anchored at one end.